Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/62666
Título: | Highly sensitive thermoelectric touch sensor based on p-type SnO x thin film |
Autor(es): | Vieira, Eliana Maria Fernandes Silva, José Pedro Basto Veltruská, Kateřina Matolín, V. Pires, A. L. Pereira, A. M. Gomes, M. J. M. Gonçalves, L. M. |
Palavras-chave: | touch sensor thermoelectric properties p-type semiconductor oxide Seebeck effect tin oxide |
Data: | 25-Out-2019 |
Editora: | IOP Publishing |
Revista: | Nanotechnology |
Resumo(s): | Here, the ability of using p-type tin oxide (SnOx) thin films as a thermal sensor has been investigated. Firstly, the thermoelectric performance was optimized by controlling the thickness of the SnOx film from 60 up to 160 nm. A high Seebeck coefficient of +263 mu V K-1 and electrical conductivity of 4.1 x 10(2) (S m(-)(1)) were achieved in a 60 nm thick SnOx film, due to a compact nanostructured film and the absence of the Sn metallic phase, which was observed for the thicker SnOx film leading to a typical thermoelectric transport properties of a n-type Sn film. Moreover, x-ray photoelectron spectroscopy revealed the co-existence of SnO (79.7%) and SnO2 (20.3%) phases in the 60 nm thick SnOx film, while the optical measurements revealed an indirect gap of 1.8 eV and a direct gap of 2.7 eV, respectively. The 60 nm-SnOx thin film have been tested as a thermoelectric touch sensor, achieving a V-signal/V-noise approximate to 20 with a rise time <1 s. Therefore, this work provides an efficient way for developing highly efficient thermal sensors with potential use in display technologies. |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/62666 |
DOI: | 10.1088/1361-6528/ab33dd |
ISSN: | 0957-4484 |
e-ISSN: | 1361-6528 |
Arbitragem científica: | yes |
Acesso: | Acesso restrito UMinho |
Aparece nas coleções: | CDF - FMNC - Artigos/Papers (with refereeing) |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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Highly sensitive thermoelectric touch sensor based on p-type SnOx thin film.pdf Acesso restrito! | 1,23 MB | Adobe PDF | Ver/Abrir |